using System;
using System.IO;

namespace SharpCompress.Compressors.LZMA;

/// <summary>
/// The exception that is thrown when an error in input stream occurs during decoding.
/// </summary>
internal class DataErrorException : Exception
{
    public DataErrorException()
        : base("Data Error") { }
}

/// <summary>
/// The exception that is thrown when the value of an argument is outside the allowable range.
/// </summary>
internal class InvalidParamException : Exception
{
    public InvalidParamException()
        : base("Invalid Parameter") { }
}

public interface ICodeProgress
{
    /// <summary>
    /// Callback progress.
    /// </summary>
    /// <param name="inSize">
    /// input size. -1 if unknown.
    /// </param>
    /// <param name="outSize">
    /// output size. -1 if unknown.
    /// </param>
    void SetProgress(long inSize, long outSize);
}

internal interface ICoder
{
    /// <summary>
    /// Codes streams.
    /// </summary>
    /// <param name="inStream">
    /// input Stream.
    /// </param>
    /// <param name="outStream">
    /// output Stream.
    /// </param>
    /// <param name="inSize">
    /// input Size. -1 if unknown.
    /// </param>
    /// <param name="outSize">
    /// output Size. -1 if unknown.
    /// </param>
    /// <param name="progress">
    /// callback progress reference.
    /// </param>
    void Code(Stream inStream, Stream outStream, long inSize, long outSize, ICodeProgress progress);
}

/*
public interface ICoder2
{
     void Code(ISequentialInStream []inStreams,
            const UInt64 []inSizes,
            ISequentialOutStream []outStreams,
            UInt64 []outSizes,
            ICodeProgress progress);
};
*/

/// <summary>
/// Provides the fields that represent properties idenitifiers for compressing.
/// </summary>
internal enum CoderPropId
{
    /// <summary>
    /// Specifies default property.
    /// </summary>
    DefaultProp = 0,

    /// <summary>
    /// Specifies size of dictionary.
    /// </summary>
    DictionarySize,

    /// <summary>
    /// Specifies size of memory for PPM*.
    /// </summary>
    UsedMemorySize,

    /// <summary>
    /// Specifies order for PPM methods.
    /// </summary>
    Order,

    /// <summary>
    /// Specifies Block Size.
    /// </summary>
    BlockSize,

    /// <summary>
    /// Specifies number of postion state bits for LZMA (0 - x - 4).
    /// </summary>
    PosStateBits,

    /// <summary>
    /// Specifies number of literal context bits for LZMA (0 - x - 8).
    /// </summary>
    LitContextBits,

    /// <summary>
    /// Specifies number of literal position bits for LZMA (0 - x - 4).
    /// </summary>
    LitPosBits,

    /// <summary>
    /// Specifies number of fast bytes for LZ*.
    /// </summary>
    NumFastBytes,

    /// <summary>
    /// Specifies match finder. LZMA: "BT2", "BT4" or "BT4B".
    /// </summary>
    MatchFinder,

    /// <summary>
    /// Specifies the number of match finder cyckes.
    /// </summary>
    MatchFinderCycles,

    /// <summary>
    /// Specifies number of passes.
    /// </summary>
    NumPasses,

    /// <summary>
    /// Specifies number of algorithm.
    /// </summary>
    Algorithm,

    /// <summary>
    /// Specifies the number of threads.
    /// </summary>
    NumThreads,

    /// <summary>
    /// Specifies mode with end marker.
    /// </summary>
    EndMarker
}

internal interface ISetCoderProperties
{
    void SetCoderProperties(ReadOnlySpan<CoderPropId> propIDs, ReadOnlySpan<object> properties);
}

internal interface IWriteCoderProperties
{
    void WriteCoderProperties(Stream outStream);
}

internal interface ISetDecoderProperties
{
    void SetDecoderProperties(byte[] properties);
}
